The toilet was not invented by Thomas Crapper.
In 1969, a writer named Wallace Reybum wrote Flushed with Pride, a far fetched “biography” of one “Thomas Crapper,” who he said invented the flush toilet.
The book was apparently meant by Reybum as a joke, as was his next tome, Bust Up: The Uplifting Tale of Otto Titzling and the Development of the Bra.
Unfortunately, a number of people took Reybum’s hoax as gospel truth, and you will still see both of these “inventors” erroneously credited in reference books and trivia games by writers who should know better.
Having said that, however, here’s a twist.
There is evidence that there really was a Thomas Crapper, who, although he didn’t invent the toilet, manufactured toilets and accessories in the late 19th century.
The evidence is quite convincing, consisting of old newspaper ads and so on, but one hesitates to take it at face value, considering past hoaxes and the too good to be true name.
So, to sum up: There might have been a Thomas Crapper who sold toilets, but we can be absolutely sure that the invention of the toilet predated him by at least 200 years.